Family history we know begins in 1350, when a SilvesterNati (=son of Donato or Nato) was elected as a Priore in the govern of Florence. He came from the art of "Cassettari" (making wood furniture) and that gives a sense to the family coat of arms: a nothched band (saw) and 2 stars.

During the year 1692 the Fattoria di Marena was about to be sold by auction after the Rondinelli family went bankrupt: on hearing about the auction Piero Nati immediately hurried down to Rome to put in their bid. He restored the main house and the farm and made Marena his country residence. Piero died in 1717, at the age of 93, and was followed by:

The surname Nati became Nati Poltri in 1750, when the family inherited the title of COMMENDATORE dell'ORDINE di S.STEFANO from an extinct branch of the Poltri family.